From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
With a sketch detailing a modification for a servo balance arm's friction joint.
| Identifier | ExFiles\Box 87\5\ scan0053 | |
| Date | 2nd January 1935 | |
| HARDY - trial To EY. from HDY.{William Hardy} HDY.{William Hardy}1/HP.2.1.35. C. Wor{Arthur Wormald - General Works Manager}-Ey, Hs.{Lord Ernest Hives - Chair} De, RUG. Rm{William Robotham - Chief Engineer} Friction for Servo Balance Arm. With reference to our N. Sch.4314 showing cotton duck applied to the friction joint, 'E' points out that in the case where the fabric is attached to the bracket, better operation will be obtained by increasing the gaps in the fabric so that the edges of the steel arm never bear on the fabric. We give a sketch below of the modification required. HDY.{William Hardy} Cotton Duck 15° 15° .050RAD | ||